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BMW 3 Series vs Audi A4

The default premium saloon scrap — handling vs cabin polish.

Specs & ownership

SpecBMW 3 SeriesAudi A4
Years2012–20182016–2024
TypeSaloonSaloon
Engine (typical)2.0 Diesel2.0 TDI
Power190 hp150–190 hp
FuelDieselDiesel
Economy50–60 mpg50–60 mpg
0–608.5–12.5 sec 0–60 mph8.5–12.5 sec 0–60 mph
Boot480 litres480–965 litres
Insurance groupTypically groups 23–34Typically groups 12–28, depending on trim and power
Road tax (indicative)Depends on first registration date, CO₂ band and fuel type — confirm on GOV.UKDepends on first registration date, CO₂ band and fuel type — confirm on GOV.UK
Running costs / yr~£2,212–£3,456 / year~£2,006–£2,952 / year
OilLL-01 / LL-04 or newer BMW Longlife grade for the engine codeOften VW 504/507 or Audi equivalent LongLife — match the exact approval
Tyre pressureTypically ~32–39 PSI; many use run-flatsOften ~32–38 PSI cold — door sticker is law for loading
ULEZOlder diesels often charge in ULEZ — check the registration on TfL before buyingMost post-2015 Euro 6 diesels are ULEZ compliant — still check the plate on TfL
Common fault #1EGR cooler and DPF loading on diesel modelsOil leaks / timing chain on some TFSI
Best forMotorway miles with a premium cabin.Company-car and premium estate buyers.

BMW 3 Series — watch for

  • EGR cooler and DPF loading on diesel models
  • Timing chain stretch on some N47 engines
  • Control arm and bush wear affecting alignment

Running costs ~£2,212–£3,456 / year

Audi A4 — watch for

  • Oil leaks / timing chain on some TFSI
  • S tronic service neglect
  • Carbon build-up on petrols

Running costs ~£2,006–£2,952 / year

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